Adjustable back box plate



July 22, 1941.

C. D. BROWN ADJUSTABLE BACK BOX PLATE Filed Dec. 12, 1940 INVENTOR. c2184 0. Bee

XTORNEY.

Patented July 22, 1941 NlTE sr TNT orrlc Draper Corporation, Hopedale, Mass,

poration of Maine Application December 12, 1940, Serial No. 369,851

6 (llaims.

This invention pertains to shuttle boxes for fly shuttle looms and more particularly relates to devices for aligning the back box plate of the shuttle box with the reed.

Looms of the type to which my invention applies commonly include a lay beam carrying a reed, a supporting member or sword, and a shuttle box at each end of the lay beam, such shuttle box including a shuttle guiding member adapted to be aligned with the reed. Alignment of the shuttle guiding member and the reed must be quite accurate and realignment may be required whenever a different reed is installed in the loom.

It has been proposed to adjustably secure the shuttle guiding member to the supporting memher by means of a plurality of positioning screws threaded into one of said members and projecting therefrom for engaging the other member and fastening means threaded into the shuttle guiding member and extending through an opening in the supporting member. Thus by properly adjusting the positioning screws and fastening means the shuttle guiding surface could be accurately aligned with the reed. However, in such construction I find that the ends of the positioning screws will over a period of time wear holes in the supporting member to such an extent as to make proper adjustment of the shuttle guiding member extremely difficult.

Accordingly, it is a principal object of the present invention to provide in a loom including a lay beam carrying a reed, a supporting member and a shuttle box including a shuttle guiding member adjustably attached to the supporting member by means of positioning screws and fastening means as aforesaid, a plate positioned between the shuttle guiding member and the supporting member and adapted to be engaged by the ends of said screws, said plate being rotatably mounted whereby upon rotation thereof a new surface is brought into engagement with the end of each screw.

The foregoing and other objects of the invention are accomplished in the construction illustrated in the accompanying drawing, of which:

Fig. 1 is a plan view of a portion of the right .hand end of the lay;

usual construction and forming no part of the present invention. The drawing shows a portion of the right hand end of the usual lay beam l which is fixed to the front face of a sword 2. The lay beam I carries a reed 3 and a shuttle box indicated generally at l. The shuttle box shown on the drawing is the right hand shuttle box and only a portion of the inner end of the box is shown. The shuttle box shown comprises a floor 5, a front box plate 6, a back box plate I and a top shelf 8.

The particular back box plate shown is constructed of two separate members, the outer end or member 8' being relatively fixed to the lay beam (the point of attachment not being shown) and the inner end or member 9, which carries the shuttle guiding surface If! being adjustable. The two members may be connected together by a universal joint indicated generally at H and more fully disclosed in patent to W. I. Stimpson No. 1,848,674 granted March 8, 1932.

The universal joint connection permits the inner end member 9 to be adjusted about different axes, one extending horizontally longitudinally of the lay and shuttle box and the other extending vertically.

In other words the shuttle guiding member 9, carrying the shuttle guiding surface Ill, may be tilted about a horizontal axis to bring theshuttle guiding surface into a plane parallel with the reed and may be moved bodily forwardly or rearwardly transversely of the lay beam to bring the shuttle guiding surface into horizontal alignment with the reed.

The inner end or shuttle guiding member 9 of the back box plate is attached to the sword 2 by means which can be manipulated to produce the desired adjustment of the shuttle guiding surface, the member being firmly fixed in position after the adjustment is accomplished.

Such adjusting means may comprisesuitable fastening means such as a threaded member or cap screw i2 extending through a vertical elongated opening E3 in the sword 2 and threaded into an opening [4 in the inner end of member 9. The cap screw I2 is of such length that it cannot project beyond the shuttle guiding surface It. A plate l5 made of hard metal or any other suitable material is loosely mounted on cap screw l2 between the member 9 and the sword 2 for a purpose hereinafter to be described. The plate i5 is shown on the drawing as having a square shape, however plate 15 may be round or polygonal, the essential being that plate i5 be of such size and shape as to be rotatable on cap screw 52. A plurality of adjusting screws are threaded into the inner end of member 9 and project therefrom for engagement with plate 15. On the drawing three such screws is, H and I8 are shown. Each of screws I6, I! and I8 is offset radially at different distances from the axis of rotation of the cap screw l2. Each of screws l6, l1 and i8 is provided with a hexagonal depression in the head thereof to facilitate adjustment. As shown on Fig. 2 screw [6 is located below the cap screw I2, screw 11 is located above the cap screw l2 and screw I8 is located in substantial horizontal alignment with cap screw l2.

Thus-itwill be seen that by proper adjustment of the screws I6, I! and I8 the member 9 may be tilted about a horizontal axis to bring the shuttle guiding surface In into a plane parallel with the reed and by turning cap screw 12 the member 9 may be moved bodily forwardly and rearwardly transversely of the shuttle .box to bring the shuttle guiding surface into horizontal alignment with the reed. After the member 9 has been properly adjusted the assembly may be locked in adjusted position by tightening up on cap screw-l2.

'Thelpressure ofthe ends of the screws Hi, i! and I8 on plate will over a period of time Wearholesin plate'lfi. When this condition .exists proper adjustment of the member 9 is extremely diilicult. However, as plate I5 is rotatably mounted on cap screw 'l2,it may be revolved to bring a new surface into contact with .the ends of the screws [6,11 and I B. After all ofilthe surface .on one side of plate l5 has-become worn it may be removed and reversed thereby providing new surfaces for engagement with the screws.

"the screws [6, l1 and [8 are offset radially at different distances from the longitudinal axis of cap screw I2, it is impossible upon rotation of plate 15 for one screw to engage the same surface of plate l5 as was previously engaged by another screw.

Having thus fully disclosedthe preferred embodiment of the invention ;*1 claim:

1. Ina loom, a lay having a reed .alongwhich a-shuttle may run, a shuttle guiding member independent-of the reed supported by said lay, a

member for supporting said lay and to which said 7 first named member is adjustably attached, a plurality of screws carried by one of said members, said screws. extending and movable transversely of the reed to position said shuttle guidingmem-ber relatively to the reed, a plate .positionedibetween said'members and against which the points of said screws bear, and fastening means extending through one of said members and said plate, said plate being rotatable about saidfastening means to bring new hearing surfacesinto contact with said points of said screws, said fastening means being threaded into the other :of said members for moving said guiding member transversely of V the lay. and for locking said members together.

'2.I In a' loom, the. combination of alayincluding. a reed a sword .for supporting said lay, a shuttle box mounted on said' lay and having a backbox plate including an inner end adapted tosbe aligned with-said reed, adjustable fasteningmeans. connecting said sword and said inner endcof said: box plate for moving said box plate transverselyof said reed, a rotatable plate loosely mounted on said fastening means and interposedlbetween said box plate and said sword and a plurality of adjustable screws threaded into 'said'boxplate and extending therethrough intoengagement with'said plate, said screws acting to' position said 'box'plate with respect to saidreed.

3.-'In a loom,'-the combination of a lay having a reed, a shuttle guiding member independent of theareed supported by'said lay, a member-for supporting said layand' to which said first named member is l ad'justablyattached, a plurality of adjustable screws threaded into and projecting from one of said members, said screws extending and movable-transversely of thereed to position-said shuttle guiding member relatively to the reed, a plate rotatably mounted between said members and against which plate the points of said screws bear, and a threaded member extending through said supporting member and 'said plateand'threaded into said guiding member for locking said members together, each of saidscrews-being spaced radially at different distances from the longitudinal axis of said threaded member whereby upon rotation of said plate a new bearing surface is brought into contact with the points of each of said screws.

4.'In a .loom, allay including a reed and a shuttlelboxhaving aiback box plate adapted to be aligned with the reed, a sword for supporting said lay,.said sword having an opening therein, a plate of hard metal interposed between said swor'dand. said'back box plate, said plate having. an. openingtherein, a plurality of adjustable screws threaded into and projecting from said .box plate'into engagement with said plate and a threaded .member extending through said openings in said sword and said plate and threaded into said box plate for locking said members together, said plate being rotatable .aboutsaid threaded member and each of said screwsbeing. offset radially at different distances from the longitudinal axis of said threaded member whereby upon rotation of said plate a new? bearing surfaceis brought into contact with the ends of each. of said screws.

.5. Ina loom, a layincluding a reed and a shuttle box having a back box plate adapted to be aligned with the reed, a sword for supporting 'saidlay, said sword having a vertically elongated opening therein a threadedmember-carried by said sword extending through said opening and threaded intosaid back box plate for moving said boxplate transversely .of said reed and about ahorizontal. axis in relation to said reed, a plurality of adjustable screws threaded into and projecting rearwardly from said box plate toward saidsword, and a hardened metal plate interposed between saidsword and said screws andagainst which-said screws bear, said plate being mounted on said threaded member for rotationabout the axis ofthe latter to bring a new bearing-surface into contact with said screws.

6. In a loom, a lay including a reed and a shuttle box having a back .box plate adapted to be aligned with the reed, a sword for supporting said-lay,.- said sword having an opening therein, ,arcap screw carried bysaid sword and extending through said opening and threaded into said .back box plate'for'moving said 'box plate transverselyof said reed and about ahorizontal axis in relation tosaid reed, a plurality of adjustable screwsthreadedinto and extending from said box plate toward said sword, at least one of said adjustable screws beinglocated above said cap screw and. atleast one of saidadjustable screws .beinglocatedbelow said cap screw, and a plate of hard metal interposed between said sword-and said adjustable screws and,against which the points of said adjustable-screws bear, said plate being rotatably mounted on said cap screw whereby upon rotation of said plate a new bearing surface is brought into contact with each of the points of *saidad'justable screws.

CARL D: BROWN. 

